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EnglishIn this paper, we demonstrate that nanoscale membrane electrode assemblies, functioning in a H 2/O 2 fuel cell, can be fabricated by impregnation of anodic alumina porous membranes with Nafion® and phosphotungstic acid. Porous anodic alumina is potentially a promising material for thin-film micro power sources because of its ability to be manipulated in micro-machining operations. Alumina membranes (Whatman, 50 μm thick, and pore diameters of 200 nm) impregnated with the proton conductor were characterized by means of scanning electron microscopy, X-ray diffraction, and thermal analysis. The electrochemical characterization of the membrane electrode assemblies was carried out by recording the polarization curves of a hydrogen-oxygen 5 cm 2 fuel cell working at low temperatures (25∈÷∈80 °C) in humid atmosphere. Our assemblies realized with alumina membranes filled with phosphotungstic acid and Nafion® reach respectively the peak powers of 20 and 4 mW/cm 2 at room temperature using hydrogen and oxygen as fuel and oxidizer
Bocchetta, P., Conciauro, F., & DI QUARTO, F. (2007). Nanoscale membrane electrode assemblies based on porous anodic alumina for hydrogen-oxygen fuel cell . JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 11(9), 1253-1261.
| Data di pubblicazione: | 2007 |
| Titolo: | Nanoscale membrane electrode assemblies based on porous anodic alumina for hydrogen-oxygen fuel cell |
| Autori: | |
| Citazione: | Bocchetta, P., Conciauro, F., & DI QUARTO, F. (2007). Nanoscale membrane electrode assemblies based on porous anodic alumina for hydrogen-oxygen fuel cell . JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 11(9), 1253-1261. |
| Rivista: | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1007/s10008-007-0280-x |
| Abstract: | In this paper, we demonstrate that nanoscale membrane electrode assemblies, functioning in a H 2/O 2 fuel cell, can be fabricated by impregnation of anodic alumina porous membranes with Nafion® and phosphotungstic acid. Porous anodic alumina is potentially a promising material for thin-film micro power sources because of its ability to be manipulated in micro-machining operations. Alumina membranes (Whatman, 50 μm thick, and pore diameters of 200 nm) impregnated with the proton conductor were characterized by means of scanning electron microscopy, X-ray diffraction, and thermal analysis. The electrochemical characterization of the membrane electrode assemblies was carried out by recording the polarization curves of a hydrogen-oxygen 5 cm 2 fuel cell working at low temperatures (25∈÷∈80 °C) in humid atmosphere. Our assemblies realized with alumina membranes filled with phosphotungstic acid and Nafion® reach respectively the peak powers of 20 and 4 mW/cm 2 at room temperature using hydrogen and oxygen as fuel and oxidizer |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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http://hdl.handle.net/10447/21353
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